|Publication number||US5692837 A|
|Application number||US 08/700,325|
|Publication date||Dec 2, 1997|
|Filing date||Aug 8, 1996|
|Priority date||Aug 8, 1996|
|Also published as||CA2212170A1, EP0823381A1|
|Publication number||08700325, 700325, US 5692837 A, US 5692837A, US-A-5692837, US5692837 A, US5692837A|
|Inventors||Jeffrey Scott Beer|
|Original Assignee||Fres-Co System Usa, Inc.|
|Export Citation||BiBTeX, EndNote, RefMan|
|Patent Citations (10), Referenced by (95), Classifications (10), Legal Events (4)|
|External Links: USPTO, USPTO Assignment, Espacenet|
This invention relates generally to flexible packages, and more particularly to flexible packages for holding products, such as foods, under vacuum therein, and which once opened are arranged to be repeatedly re-opened and reclosed, while keeping the contents fresh.
Various types of flexible packages for holding particulate materials, e.g., ground or whole bean coffee, chemicals, etc., under vacuum therein have been disclosed in the patent literature and are commercially available today. Examples of such packages are found in the following U.S. Pat. Nos. 4,576,285 (Goglio), 4,705,174 (Goglio), and 4,913,561 (Beer).
The major advantages of flexible packaging, as compared to relatively rigid packaging, e.g., cartons, are that until the flexible package is filled it takes up very little volume, and after it is emptied of its contents it readily collapses, thereby reducing its volume to approximately that of the unfilled package. The former characteristic is a significant advantage insofar as storage is concerned, while the latter characteristic is a significant advantage from the standpoint of disposability.
One common type of flexible package for holding goods under vacuum until the package is opened is the so-called "gussetted" package or bag. Typically such a package is formed from a web of flexible stock material, e.g., polyethylene, polyester, polypropylene, metal foil, and combinations thereof in single or multiple plies, into a tubular body, having a face panel, a back panel, and a pair of gussetted sides. Each gussetted side is formed by a pair of gusset sections and a central fold edge interposed between a pair of outer fold edges. The lower end of the bag is commonly permanently sealed, e.g., heat sealed, along a line extending transversely across the width of the bag close to its bottom edge. The top of the bag is commonly sealed transversely across the entire width of the bag in a number of ways to maintain the contents under vacuum until the bag is opened. Such action is frequently accomplished via a readily openable mouth, which when opened provides access to the contents of the bag. For example, in one prior art package the top seal is made peelable by modifying the sealant layer with a peelable coating or incompatible additive. Thus, when the seal is peeled apart the unsealed portions form an open mouth through which the contents of the package may be removed. Another approach to providing an opening or mouth for a flexible package is that of the heretofore identified U.S. Pat. No. 4,705,174 (Goglio). That package includes a peel strip applied to the inner surface of the package below the top edges. The strip provides an air-tight interfacial seal which can be readily peeled apart to provide access to the interior of the package. Another approach to providing an opening or mouth for a flexible package is to score the upper flap of the package by laser or mechanical means through a tear initiation resistant layer(s) of the package structure. In this way the package can be opened by tearing away the scored area to form the package's mouth.
Gussetted bags, particularly those for foods, frequently make use of a plastic coated wire tie to serve as reclosure for the bag. In particular, the wire tie is designed to close the mouth of the bag after it has been initially opened so that the reclosed bag will keep its contents fresh. Whether or not such wire-tie reclosures effectively provide a positive means of reclosing a gussetted package is open to debate. Moreover, the effectiveness of such closures is frequently dependent upon the manner in which the wire tie is used. Thus, there is a perception in some quarters of the consuming public that a wire-tie package cannot be reclosed securely enough to maintain product freshness over an extended period of time. Therefore, such packages have not been fully accepted as being truly reclosable.
Non-gussetted flexible packages, such as stand-up pouches, are commercially available and typically include so-called "zipper-type" reclosures. Examples, of such packages are shown in U.S. Pat. Nos. 5,059,036 (Richison et al.), 5,147,272 (Richison et al.), and 5,147,272 (Richison et al.). These zipper-type closures are generally perceived by the consuming public as providing for a more effective reclosure of the flexible pouch after it has been initially opened than twist or wire tie closures. In fact, zipper-type closures may be more effective than wire-tie reclosures. At the very least they are easier to use, and not prone to loss or misplacement. Thus, stand-up, flexible pouches with zipper-type closures have gained wide acceptance by the consumer.
While the stand-up, zipper-closure type pouch offers advantages over a gussetted flexible package insofar as actual or perceived reclosability is concerned, its shape does not allow efficient use of case packing and retail shelf space, as does a gussetted package. In addition, the stand-up pouch cannot be stacked readily, if at all.
Thus, a need exists for a flexible package having the stacking and shape advantages of a gussetted package, but with the reclosability of a zipper-type closure stand-up package.
In my co-pending U.S. patent application, Ser. No. 08/690,271, filed on Jul. 19, 1996, entitled Gussetted Flexible Package With Reclosable Mouth Using Zipper Type Reclosure Strip, which is assigned to the same assignee as this invention and whose disclosure is incorporated by reference herein, there is disclosed and claimed a gussetted flexible package which addresses the needs of the prior art. That package has an interior for initially holding some product, e.g., whole coffee bean or ground coffee, under vacuum, and includes a mouth portion arranged to be peeled open to provide access to the contents of the package. The package is formed of a flexible material and includes a front panel, a rear panel, and a pair of opposed side gussets. The panels and gussets each include a top portion, which between them define the package's mouth. The top portion of the package at the mouth is flattened. A peelable closure and a zipper closure are provided in the flattened mouth of the package with the zipper closure located above the peelable closure. The zipper closure comprises a pair of strips which are releasably secured to each other. In particular, one of the strips extends across and is fixedly secured to the inner surface of the package at the top end the full width of the front panel and one half of each of the gussets on either side of the front panel. The other of the strips extends across and is fixedly secured to the inner surface of the package at the top end thereof the full width of the rear panel and the other half of each of the gussets on either side of the rear panel. The package is arranged to be sealed under vacuum, with the peelable closure maintaining that vacuum within the package until it is peeled open. The zipper closure is arranged to be opened and reclosed after the peelable closure has been peeled open in order to minimize the ingress of air into the package. The package includes a top portion which can be folded into a flap and flattened to enable the package to be readily stacked.
In my co-pending U.S. patent application, Ser. No. 08/694,375, filed contemporaneously herewith, entitled Gussetted Flexible Package With Reclosable Mouth Using Zipper Type Reclosure Strip Located Above The Mouth, which is assigned to the same assignee as this invention and whose disclosure is incorporated reference herein, there is disclosed and claimed a gussetted flexible package which also addresses the needs of the prior art. That package is similar in construction to the package of my aforementioned copending application entitled Gussetted Flexible Package With Reclosable Mouth Using Zipper Type Reclosure Strip, except that the top end portion of the package forming the mouth is not flattened, and the zipper closure extends only the width of the front and rear panels. In particular, one of the strips extends across the top portion of one of the panels (but not to the gussets) above the peelable seal and is fixedly secured thereto. The other strip extends across the top portion of the other of the panels (but not to the gussets) and is fixedly secured thereto. The strips are arranged to be releasably secured to each other to temporarily close the package's mouth after the peelable closure is opened, whereupon the zipper closure eliminates or minimizes the ingress of air into the package to protect any material therein while being readily openable to provide access to that material through the package's mouth. The top portion of the package can be folded into a flap and then flattened to enable the package to be readily stacked.
While the inventions of my aforementioned patent applications are suitable for their intended purposes, a need still exists for other gussetted packages which have the stacking and shape advantages of such packages, but with the reclosability of a zipper-type closure stand-up package, yet which do not use zipper type closures.
Accordingly, it is a general object of this invention to provide another gussetted flexible package which addresses the needs of the prior art.
It is a further object of this invention to provide a gussetted flexible package which includes a snap closure.
It is a further object of this invention to provide a gussetted flexible package with a snap closure which is simple in construction.
It is a further object of this invention to provide a gussetted flexible package which includes a snap closure and which is low in cost.
It is a further object of this invention to provide a gussetted flexible package which includes a snap closure and which can be manufactured easily.
It is a further object of this invention to provide a gussetted flexible package which includes a snap closure and which is easy to use.
It is a further object of this invention to provide a gussetted flexible package which includes a snap closure and which can be readily stacked.
These and other objects of the instant invention are achieved by providing a flexible, gussetted package having an interior for holding some material, e.g., whole bean coffee, ground coffee, etc., therein. The package is formed of a flexible material and comprises a front panel and a rear panel connected to each other by respective side gussets. Each of the panels and gussets has an upper end portion which conjoin to form a mouth for the package. The upper end of the package at the mouth is of the width of the panels.
The package additionally comprises a first and second closure means located adjacent the package's mouth. The first closure means, e.g., a peelable closure, is located within the package's mouth and is arranged for sealing the interior of the package until its mouth is opened. The second closure means is located above the first closure means and comprises a pair of snap strip members releasably secured to each other. One snap strip member extends across the top portion of one of the panels and is fixedly secured thereto. Similarly, the other snap strip member extends across the top portion of the other of the panels and is fixedly secured thereto. The snap strip members are arranged to be releasably snapped together to temporarily close the package's mouth after the first closure means is opened, whereupon the second closure means eliminates or minimizes the ingress of air into the package to protect any material therein, while being readily openable to provide access to that material through the mouth.
FIG. 1 is an isometric view of a gussetted flexible package constructed in accordance with this invention and shown in its condition as initially sealed;
FIG. 2 is a view of the top portion of the package of FIG. 1 but showing an initial step in the opening of the package;
FIG. 3 is a view similar to FIG. 2 but showing the package after it has been fully opened;
FIG. 4 is an enlarged sectional view taken along line 4--4 of FIG. 3;
FIG. 5 is an enlarged sectional view taken along line 5--5 of FIG. 2; and
FIG. 6 is an enlarged sectional view taken along line 6--6 of FIG. 2.
Referring to FIG. 1, there is shown at 10 in FIG. 1 a flexible package constructed in accordance with this invention. The package basically comprises a gussetted bag 20 and a resealable closure 22. The bag 20 is arranged to hold any material, e.g., coffee beans, ground coffee, chemicals, etc., for dispensing, e.g., pouring, therefrom. The bag or package 20 is formed of a web of any suitable, flexible material in a manner to be described hereinafter.
Turning now to FIGS. 1-4 it can be seen that package 20 basically comprises a front wall or panel 24 (FIGS. 3 and 4), a rear wall or panel 26 (FIGS. 1-4), a pair of identical gussetted sides 28 (FIGS. 3 and 4), a top end portion 30, and a bottom end portion 32. The top end portion 30 of the package terminates in a top marginal edge 34 (FIGS. 1-4). In a similar manner the bottom end portion 32 (FIG. 1) of the package terminates in a bottom marginal edge 36 (FIG. 1). If desired, an a one-way venting valve (not shown) may be included in any suitable portion of the package to enable gases which may be produced by the material(s), e.g., coffee, contained within the sealed package to vent to the ambient air without air gaining ingress to the package's interior.
The front panel 24, rear panel 26, and the two gussetted sides 28 of the package are all integral portions of a single sheet or web of the flexible material, of single or multiple ply or layers, which has been folded and seamed to form a tubular body. One particularly useful flexible material for the package 20 is a laminated web of flexible packaging material commercially available from Fres-Co System USA, Inc., of Telford Pa., the assignee of this invention. That material comprises a 48 gauge polyester layer, ink, an adhesive layer, a 28 gauge aluminum foil layer, another adhesive layer, a 60 gauge nylon layer, another adhesive layer, and a 300 gauge easy open sealant layer. When a web of such material is formed into the tubular body for the package the polyester layer serves as the outer surface of the package, with the easy-open sealant layer being the inner surface of the package.
As can be seen clearly in FIGS. 1-3 and 6, the rear panel 26 of the package 20 includes a fin 38 which extends longitudinally along the back of the package from the top edge to the bottom edge. The fin 38 is located approximately midway between the gussetted sides 28 and is formed by portions of the web material contiguous with the vertical marginal edges of the sheet or web which are brought into engagement with each other and are secured to one another via any conventional sealing technique, such as heat sealing or welding. The resultant fin or seam 38 is generally folded down so it lays substantially flush with the rear wall 26 of the package.
As can be seen clearly in FIGS. 1-4, the closure 22 is located in the top end portion 30 of the package. The details of the closure 22 will be described later. Suffice it for now to state that the closure extends across the width of the package's panels 24 and 26, with portions secured on the inner surface thereof immediately below the package's top edge 34.
The package 20 is arranged to be initially hermetically sealed closed along a transverse, peelable seal line 40 (FIGS. 1-3), after it has been filled and vacuumized. The seal line 40 is formed in a conventional manner and extends across the width of the package 20 slightly below the closure 22 and seals the inner surfaces of the abutting front and rear panels to each other between the inner fold lines 28A of the pair of gussets 28, while sealing the outer marginal portions of the front panel 24 to the portions of the gussetted sides contiguous therewith, while also sealing the outer marginal portions of the rear panel 26 to the portions of the gussetted sides contiguous therewith, as is conventional. Thus, the peelable seal line 40 serves to isolate the contents of the package from the ambient atmosphere once it is sealed. The peelable seal line 40 is formed by the appropriate heat sealing of the abutting easy-open sealant layer portions forming the inner surface of the package 20. Alternatively, the seal line 40 can be formed in any other conventional manner, e.g., the use of peelable sealing strips like that disclosed in the aforementioned Goglio patents, whose disclosures are incorporated by reference herein.
The lower or bottom end 32 of the package is sealed closed along a transverse, permanent seam line closely adjacent the bottom edge 36. The permanent seam line is formed using any conventional sealing technique, such as that used for the vertical seamed fin 38.
When the package 20 is filled, vacuumized, and sealed its contents, e.g., whole bean coffee (not shown), will be kept isolated from the ambient air by the seal line 40. The closure 22 is also closed at this time and the top portion 30 of the package with the closure secured thereto is folded down to form a flap 12 such as shown in FIG. 1. The Flap 12 is held in place by a strip of adhesive tape 14. In order to gain ingress into the package so that some or all of its contents can be removed, the tape 14 is removed and the flap unfolded to the position shown in FIG. 2. The closure 22 portions contiguous with the top marginal edges 34 of the package are grasped and pulled apart (as will be described in detail later). This action unsnaps the closure, i.e., separates its two components strips (to be described later), and also peels open the seal line 40 to form the mouth of the package as shown in FIG. 3. The contents of the package can then be poured or otherwise removed through the package's mouth.
The closure 22 also serves as the means to enable the mouth of package to be reclosed after some of the package's contents have removed and it is desired to keep the remaining contents fresh, i.e., generally isolated from the ambient atmosphere. The closure 22 is best seen in FIG. 2 and comprises a pair of snap strips 22A and 22B which are arranged to releasably mate with each other. Each of the strips is formed of a plastic material, e.g., high or low density polyethylene or polypropylene or some other material which is slightly flexible to enable it to be bent out of its original shape by the application of force thereto, but which returns to its original shape after removal of that force. Each strip extends the width of the panel to which it is secured and are of generally similar construction. Thus, the strips 22A and 22B each include a top edge or grasping portion 50 and a bottom edge or mounting portion 52. Each strip is arranged to be fixedly secured, e.g., welded or permanently adhesively secured to the inner surface of the top portion of the respective panel of the package 20 immediately below the top edge 34 and across the full width of the strip.
The strip 22A includes a pair of prongs or projections 42 which project perpendicularly upward from respective planar bases 44 (FIG. 6) located within the channel shaped bottom portion 52 adjacent each end of the strip 22A. Each of the prongs is cylindrical and terminates in a slightly bulbous free end or tip 42A (FIGS. 3-6). The strip 22B includes a pair of wells or recesses 46 corresponding in shape and size to the bulbous tips 42A of the prongs for receipt thereof. Each of the wells 46 is located within a respective planar base 48. The planar bases 48 are located within the channel shaped bottom portion 52 of the strip 22B adjacent the ends thereof. The spacing between the wells 46 is the same as the spacing between the prongs 42.
As can be seen in FIGS. 5 and 6, the top portions of the package on each side of the front panel 24, on each side of the rear panel 26, and within the gussets, include holes 54. When the package is sealed shut these holes 54 are aligned with one another so that the pair of prongs 42 of the strip 22A can extend through the aligned holes 54 in the panels and the gussets 28 to snap fit within the pair of wells in the strip 22B. Thus, the holes prevent the material forming the package from interfering with the prongs snap fitting into the wells to thereby snap fit the strips 22A and 22B together.
The material forming the strips is somewhat elastic to enable the bulbous tips of the prongs to snap into the respective wells, and to be locked therein against accidental disconnection, yet which enable the bulbous tips of the prongs to exit the wells when the strips are pulled apart. Notwithstanding their slight elasticity, the strips are substantially rigid so that when they are snapped together the portion of the strip 22A between the prongs 42 serves to hold the top portion of the front panel 24 tightly against the top portion of the rear panel and with the side gussets interposed therebetween while the portion of the strip 22B between the wells 46 serves to hold the top portion of the rear panel tightly against the top portion of the front panel and with the side gussets interposed therebetween. The channel shaped lower portions 54 of the strips 22A and 22B tend to reinforce the strips and keep them linear to further ensure that the mouth of the package is sealed closed when the strips are snap connected to each other. Thus, when the strips 22A and 22B are snapped together the contents of the bag 20 are effectively isolated from the ambient surroundings so that they can be kept fresh over an extended period of time.
The closure 22 can be readily opened by snapping apart the two strips 22A and 22B. In order to accomplish that action the strips 22A and 22B include the heretofore identified grasping portions 50. Since the strips are somewhat flexible and resilient, the user of the package can readily grasp the middle of the top edge portion 50 of the strip 22A between his/her thumb and forefinger of one hand and the middle of the top edge portion 50 of the strip 22A between his/her thumb and forefinger of the other hand. Once that has been accomplished the user can readily pull the strips apart, to unsnap the closure, i.e., to cause the prongs to snap out of the wells.
The package can be reclosed to seal its remaining contents therein by merely bringing the strips 22A and 22B together and squeezing their end portions together to cause the prongs to snap into their respective wells. The flap 12 can then be folded down and the adhesive tape 14 reapplied to hold the flap in place.
In order to enable a bag of this invention to be readily stacked on other similar bags after it is initially filled and hermetically sealed by seal line 40, its upper or top portion 30 can be folded over itself to form the flap, with the flap 12 being adhesively secured to the underlying portion of the bag by the tape strip 14. The flap 12 and underlying portion of the bag can then be folded down and disposed on the remaining contiguous portion of the bag by the tape strip. The flap and underlying portion of the package can then be folded down and disposed on the remaining portion of the package to form a flat top surface for the bag. This action effectively "squares" the top of the bag so that the bag has a brick-like shape. Thus, the resulting package is brick-like in shape and can be readily stored and stacked. In order to enable the package to be readily opened the adhesive strip 58 is removable.
As should be appreciated from the foregoing the subject invention provides a new means of reclosing a flexible package having side gussets, in the interest of consumer acceptance.
As should be appreciated from the foregoing the subject invention provides a new means of reclosing a flexible package having side gussets, in the interest of consumer acceptance.
Without further elaboration the foregoing will so fully illustrate my invention that others may, by applying current or future knowledge, adopt the same for use under various conditions of service.
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|US20080279485 *||May 7, 2008||Nov 13, 2008||Mark Steele||Packages having fluid-filled chamber closures|
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|EP1020369A1 *||Jan 12, 2000||Jul 19, 2000||Fres-Co System Usa, Inc.||Resealable flexible package|
|EP1046591A2 *||Apr 20, 2000||Oct 25, 2000||Reuther Verpackung Gmbh||Bag with reclosable opening|
|EP1048580A2||Apr 18, 2000||Nov 2, 2000||Fres-Co System Usa, Inc.||Closure for flexible packages and flexible packages including a closure|
|EP1057738A1||Jun 2, 2000||Dec 6, 2000||Fres-Co System Usa, Inc.||Flexible package provided with a snap closure|
|EP1070668A2 *||Jul 17, 2000||Jan 24, 2001||Fres-Co System Usa, Inc.||Package with reclosable spout|
|EP1389586A1||Aug 12, 2003||Feb 18, 2004||Fres-Co System Usa, Inc.||Snap closure for flexible packages|
|EP2004516A2 *||Apr 3, 2007||Dec 24, 2008||Madson Products, LLC||Improved foldable utility receptacle and method|
|EP2004516A4 *||Apr 3, 2007||Dec 4, 2013||Madson Products Llc||Improved foldable utility receptacle and method|
|EP2364922A2||Nov 7, 2005||Sep 14, 2011||Mark Steele||Package having a fluid actuated closure|
|EP2463215A1||Dec 9, 2011||Jun 13, 2012||Fres-co System USA, Inc.||Gusseted flexible package with enlarged opening|
|WO2008058418A1 *||Nov 14, 2007||May 22, 2008||Zip Pack Ip Ag||Reclosable bag having a security closing device|
|WO2010003233A1 *||Jul 7, 2009||Jan 14, 2010||Martin Woodhouse||Reclosable side gusset package|
|U.S. Classification||383/210.1, 383/210, 383/92, 383/120|
|International Classification||B65D33/34, B65D33/25|
|Cooperative Classification||B65D33/25, B65D33/34|
|European Classification||B65D33/34, B65D33/25|
|Oct 31, 1996||AS||Assignment|
Owner name: FRES-CO SYSTEM USA, INC., PENNSYLVANIA
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:BEER, JEFFREY SCOTT;REEL/FRAME:008201/0246
Effective date: 19961017
|May 21, 2001||FPAY||Fee payment|
Year of fee payment: 4
|Mar 2, 2005||FPAY||Fee payment|
Year of fee payment: 8
|Mar 9, 2009||FPAY||Fee payment|
Year of fee payment: 12